Items sold on Amazon are directly from Usogood. Items sold on other platforms may have resellers, or second-hand items, or even counterfeit items, so please be careful to screen them. Please note that even if you have purchased a product that has exceeded Amazon's after-sales policy, please don't worry. Contact us and we will try our best to provide you with maximum support. If you have any questions or need assistance, please feel free to reach out. Simply fill out the form below and the necessary information will be sent to our official email address. We’ll do our best to get back to you within 48 hours (although we typically respond within 24-48 hours, and may be delayed during holidays). Working hours: Mon-Fri 9:30am-18:30pm (GMT+8)